The disclosure relates to a method for producing an electromagnet in which laminated cores comprising sheet metal elements are stamped out of a plurality of metal sheets lying one on top of the other to form teeth. The sheet metal elements of the laminated cores are pressed together. The laminated cores that are located next to one another are wound with the coil winding in opposite directions to produce a magnetic pole and the wound laminated cores are joined to form the electromagnet While the sheet metal elements of the laminated cores are stamped out of the metal sheets, continuous connections between the sheet metal elements of all the laminated cores located in at least an identical position remain, the connections being used as assembly aids when the electromagnet is constructed. The connections are interrupted during or after the construction of the electromagnet.

A stamping progressive die for a stator and rotor core of a motor using adhesive dispensing lamination and an adhesive dispensing process. The adhesive dispensing lamination device comprises a stamping station, an adhesive dispensing station for a first adhesive component, an adhesive dispensing station for a second adhesive component and a blanking station which are arranged on the stamping progressive die for the core of the stator and rotor of the motor, wherein an automatic stacking mechanism for core stamping sheets is arranged below the blanking station; one of the adhesive dispensing station for the first adhesive component and the adhesive dispensing station for the second adhesive component is located at an upper position of a material strip, and the other adhesive dispensing station is located at a lower position of the material strip.

A rotor includes a rotor core and a plurality of magnets accommodated in each accommodation hole of the rotor core. The rotor core has a radial core thickness that is different on one side and the other side in a radial direction with the accommodation hole in between. The accommodation hole is formed surrounded by first side surfaces facing each other in a radial direction and second side surfaces facing each other in a circumferential direction. The magnet consists of two divided magnets arranged in the circumferential direction within the accommodation hole. The two divided magnets are biased in the radial direction so as to be close to the first side surface on a side having a thicker radial core thickness among both radial sides of the accommodation hole, and are biased so as to be close to the second side surface in the circumferential direction.

A manufacturing apparatus of a rotor is for a rotor having a permanent magnet provided in a state of being embedded inside a rotor core, the permanent magnet having a folding shape being convex towards a radially inside part. The manufacturing apparatus includes a magnetization apparatus that magnetizes the permanent magnet in the embedded state from outside the rotor. The magnetization apparatus is provided with a yoke part at least disposed in an axially outside part of the rotor, the yoke part constituting a magnetic path for supplying a magnetization flux to the permanent magnet. The yoke part includes at least one of a dust core, a laminated steel plate, and a slit having a function of suppressing eddy current occurring due to the magnetization flux.

A installation for producing laminated cores, bonded over their entire surface, for an electrical machine, comprising: a workpiece carrier for receiving a semi-finished product and for applying a defined axial prestressing force to the semi-finished product, the semi-finished product having a plurality of electrical sheet laminations coated with Backlack, and at least two stations, comprising a heating station for heating the semi-finished product and a cooling station for energy-assisted cooling of the semi-finished product, wherein the at least two stations are arranged spatially separated from one another and are passed through by the workpiece carrier.

A rotor core manufacturing method and system allow for molding permanent magnets in an unmolded rotor core to provide an electric motor molded rotor core. The unmolded rotor core includes a shaft and rotor core body having a central through-hole along a longitudinal axis, magnet cavities around the axis with magnets therein. The shaft lies in the central through-hole and projects therefrom, and the molded rotor core includes the rotor core body having the magnets fixed in the cavities. The method includes inserting an unmolded rotor core between the first and second molds of a rotor core molding system; moving the molds together to clamp the rotor core body of the unmolded rotor core with a predetermined pressure; providing a molding material into the magnet cavities; letting the molding material cure within the magnet cavities to a molded rotor core; opening the molds and removing the molded rotor core.

A coil for an electric machine including a conductive strand having a first end, a second end, and a plurality of windings between the first and second ends and an electric insulating body within which the conductive strand is at least partially encased, wherein at least a portion of the insulating body includes perforations that allow a coolant to penetrate into the insulating body to cool the coil during use of the electric machine. A method of making the coil includes molding or printing the insulating body about the conductive strand so as to have perforations therein.

A resolver includes a stator having a stator body formed of a first plastic material and a cover covering a side of the stator. The cover has a cover body formed of a second plastic material. The first plastic material of the stator body is attached to the second plastic material of the cover body by a plastic weld.

There is provided a phase adjustment device for a rotary machine including a rotor and a stator. The phase adjustment device includes a worm wheel configured to be detachably provided to a shaft end of the rotor, and a worm portion configured to be detachably provided to the stator and mesh with the worm wheel.

A method for manufacturing a laminated iron core includes raising a mounting table, fitting laminated blocks into a post using a transfer device after the raising the mounting table, laminating the laminated blocks by, each time the laminated block is fitted into the post, lowering the mounting table while pressing an upper surface of the laminated block toward the mounting table with two clamping portions. The laminating the laminated blocks includes stopping operation of the transfer device when load acting on the two clamping portions in a case in which the two clamping portions press the laminated block toward the mounting table is larger than a predetermined load.